One of the fact you must know about real number is “It is named as real number because it is not imaginary.” It is a part of imaginary number. Formally real number is defined as the number which can be expressed on number line. Any number you are thinking beyond is real number except zero and neglecting Imaginary number. There is a unique real number corresponding to every point on the number line. Also, corresponding to each real number, there is a unique point on the number line. More Details Visit: https://learn.sarthaks.com